FR2703183A1 - Safety device for mechanically locking circuit breakers between them. - Google Patents

Abstract

A safety device intended to mechanically lock together at least two circuit breakers (1) each having an engaged state and a tripped state. The device comprises at least one adaptation block (10) associated with each circuit breaker, the adaptation blocks being intended to be connected by cables. An adaptation unit associated with a circuit breaker comprises a part movable around an axis of rotation to define two arms which cooperate respectively with a first finger (2) of the circuit breaker capable of moving between a first position occupied when the circuit breaker is in the tripped state and a second position occupied when the circuit breaker is in the engaged state, and on the other hand, with a second finger (3) of the circuit breaker capable of being moved between a first occupied position to allow the circuit breaker to pass from the tripped state to the engaged state and a second position occupied to prevent the circuit breaker from going from the tripped state to the engaged state. This part has a double effect and makes it possible to reduce the number of cables required to lock several circuit breakers.

Description

Safety device for mechanically locking

circuit breakers

  The invention relates to a safety device for mechanically locking together at least two devices.

  Such a safety device is designed in the first place to mechanically lock between them two or more open circuit breakers placed at the arrivals of an electrical network in order to prohibit certain combinations of circuit breaker engagement. The locking of these circuit breakers must be positive. , i.e. it is necessary to trip one or more circuit breakers in order to be able to trip one or more others, the circuit breakers thus changing from one authorized trip combination to another.15 Each device therefore has a engaged state and a triggered state and is provided on the one hand, with a first member capable of moving between a first occupied position when the apparatus is in the triggered state and a second occupied position when the apparatus is in the state20 engaged, and on the other hand, a second member capable of being moved between a first occupied position to allow the device to pass from the triggered state to the engaged state and a second position occupied to prevent the device from going from the triggered state to the engaged state. 25 A known safety device is shown in FIG. 1 in the case of its use with two 1.1 'devices This safety device comprises two 10.10' adapter blocks installed respectively on the two devices Each adapter block, installed on a 10 device, has a first mechanical coupling means intended to be mechanically controlled by the first member 2 of this device when the latter moves between its first and its second position and a second mechanical coupling means 21 intended to mechanically control the movement of the second member 3 of this device between its first and its second position Mechanical interconnection means 30, 31 are provided for transmitting commands

  movement between said coupling means 20,21 of the adapter block 10 and those 20 ′, 21 ′ of the other adapter block 10 'so as to coordinate the movements5 of the organs of the devices 1,1 ′.

  As shown in this figure, the first mechanical coupling means 20 of the adapter block 10 is connected to the second mechanical coupling means 21 'of the adapter block 10' by a rod 30 and the second mechanical coupling means 21 of the block adapter 10 is connected to the first mechanical coupling means 20 'of the adapter block 10' by a rod 31. When the device 1 changes from a triggered state to an engaged state (the second member of the device 1 occupying the

  first position), the first member 2 of the device 1 moves between its first position and its second position.

  The displacement of the first member of the apparatus 1 causes the displacement of the first mechanical coupling means 20 of the adapter block 10 which actuates the rod 30 and 20 causes the displacement of the second mechanical coupling means 21 'of the adaptation block 10 'The displacement of the second mechanical coupling means 21' of the adapter block 10 'causes the displacement of the second member 3' of the device 1 'from its first position to its second position (the first member 2' of the device 1 'occupying its first position) As a result, the device 1' cannot

  to go from a triggered state to an engaged state while the apparatus 1 is in an engaged state This is a first authorized combination of activation of the two apparatuses.

  Furthermore, when the device 1 'goes from a triggered state to an engaged state (the second member 3' of the device 1 'occupying the first position), the first member 2' of the device 1 'moves between its first position and its second position The displacement of the first member 2 'of the device 1' causes the displacement of the first mechanical coupling means 20 'of the adapter block' which actuates the rod 31 and causes the displacement of the second mechanical coupling means 21 of the adapter block 10 The movement of the second mechanical coupling means 21 of the adapter block 10 causes the second member 3 of the device 1 to move from its first position to its second position (the first member 2 of the apparatus 1 occupying its first position) It follows that the apparatus 1 cannot pass from a triggered state to an engaged state while the apparatus 1 'is in an engaged state this is a second authorized combination of enc launching of the devices. this safety device guarantees that in no way the two devices can be switched on at the same time In particular, when it is an open circuit breaker, the safety device prevents two sources of current (normal, emergency) arriving respectively the two circuit breakers are not put in parallel. Such a security device, however, has the

following disadvantages.

  To lock two devices between them, it is necessary to use two rods because the first and second mechanical coupling means of an adapter block are independent of each other To lock three devices between them, it is necessary to use six rods The number of useful rods therefore makes the safety device expensive and the assembly complicated. It is necessary to adjust the travel of the rods so that the functioning of the safety device is

  satisfactory The adjustment is therefore complicated due to the large number of rods to be adjusted.

  The object of the invention is to remedy these various drawbacks.

  To this end, the subject of the invention is such a safety device, characterized in that said first and second means of mechanical coupling of an adaptation block are arranged to react one on the other in such a way that the first mechanical coupling means controls the second mechanical coupling mechanically and vice versa. 5 Unlike the known safety device described above with reference to FIG. 1, a single rod is sufficient to transmit the movement commands between the coupling means mechanics of a first adaptation block and those of a second adaptation block In particular, if the first coupling means of a first adaptation block according to the invention is connected by a rod to the second coupling means of a second adaptation block, the displacement of the first coupling means of the first adaptation block can cause the displacement of the second coupling means of the second adaptation block via the diary of the rod and the displacement of the first coupling means of the second adaptation block can cause the displacement of the second coupling means of the first adaptation block through successively the second coupling means of the second adaptation block, of the same rod and of the first coupling means of the first adaptation block. The number of parts constituting an adaptation block can be reduced if said first and second coupling means of the adaptation block consist of a single part mounted for rotation on an axis and having a first and

  a second operating arm defined on either side of the axis, the first arm cooperating mechanically with the first member of the apparatus, the second arm cooperating mechanically with the second member of the apparatus.

  Each adapter block of the safety device according to the invention can easily be installed on a fixed part adjoining an appliance. Cables can be provided as mechanical interconnection means for transmitting the movement commands between the adaptation blocks of the safety device according to the invention so that it is possible to lock devices of different sizes independently the arrangement of the devices and their relative positions. 5 Three devices can be locked together according to authorized combinations of interlocking, by

  example 1 device engaged out of 3, when the mechanical interconnection means comprise a fixed spreader in addition to cables, or for example 2 devices engaged out of 3.10 when the mechanical interconnection means include a movable spreader in addition to cables.

  The invention is described in more detail below with reference to the drawings.

  Figure 1 is a schematic representation of a

  set of two circuit breakers fitted with a known safety device.

  Figure 2 is a schematic representation of a circuit breaker equipped with the safety device according

  the invention including an adapter block. 20 Figure 3 is an elevational view of the adapter block shown in Figure 2.

  FIG. 4 is a side view along arrow IV of the adaptation block of FIG. 3.

  Figure 5 is a schematic representation of the block

  adaptation shown in Figure 3 for a first position thereof.

  Figure 6 is a schematic representation of the adapter block shown in Figure 3 for a second position thereof. Figure 7 is a schematic representation of the adapter block shown in Figure 3 for a third position thereof -this. Figure SA symbolically represents the adapter block of Figure 3 in its first position

shown in Figure 5.

  FIG. 6 A symbolically represents the adaptation block of FIG. 3 in its second position represented in FIG. 6. FIG. 7 A symbolically represents the adaptation block of FIG. 3 in its third position represented in FIG. 7. FIGS. 8, 9.10 schematically represent two circuit breakers equipped with the safety system according to

  the invention and locked together respectively in a first, a second and a third authorized interlocking combination.

  Figures 11,12,13,14,15 schematically represent three circuit breakers fitted with the safety system according to the invention and locked together15 respectively in a first, a second, a third, a fourth, a fifth authorized interlocking combination. FIG. 16 is a schematic representation of a circuit breaker equipped with the safety device according to

  the invention including a fixed spreader.

  FIG. 17 is an elevation view of the fixed lifter shown in FIG. 2.

  FIG. 18 is a sectional view along XVII-XVII of the fixed lifter of FIG. 17.

  Figure 19 is a schematic representation of the fixed spreader shown in Figure 17 for a first position thereof. Figure 20 is a schematic representation of the fixed spreader shown in Figure 17 for a second

position of it.

  Figure 21 is a schematic representation of the fixed spreader shown in Figure 17 for a third position thereof. Figure 22 is a schematic representation of the

  fixed lifter shown in Figure 17 for a fourth position thereof.

  Figure 19 A symbolically represents the fixed lifter of Figure 17 in its first position shown in Figure 19. Figure 20 A symbolically represents the fixed lifter of Figure 17 in its second position shown in Figure 20. Figure 21 A symbolically represents the lifter fixed in Figure 17 in its third position shown in Figure 21.10 Figure 22 A symbolically represents the fixed lifter in Figure 17 in its fourth position shown in Figure 22. Figures 23,24,25, 26 schematically show three circuit breakers equipped with the system safety including a fixed lifting beam according to the invention and locked together respectively in a first, a second, a third and a fourth combination of authorized engagement. FIG. 27 is a schematic representation of a circuit breaker equipped with the safety device according to

  the invention including a movable lifting beam.

  FIG. 28 is an elevation view of the mobile lifter shown in FIG. 27.

  FIG. 29 is a sectional view along XXIX-XXIX of the movable lifter of FIG. 27.

  Figure 30 is a schematic representation of the movable lifter shown in Figure 28 for a first position thereof. Figure 31 is a schematic representation of the movable lifter shown in Figure 28 for a second

position of it.

  Figure 32 is a schematic representation of the movable lifter shown in Figure 28 for a third position thereof. Figure 33 is a schematic representation of the

  movable lifting beam shown in Figure 28 for a fourth position thereof.

  Figure 34 is a schematic representation of the movable lifter shown in Figure 28 for a fifth position thereof. Figure 35 is a schematic representation of the movable lifter shown in Figure 28 for a sixth position thereof. Figure 36 is a schematic representation of the mobile lifter shown in Figure 28 for a seventh position thereof.10 Figure 30 A symbolically represents the mobile lifter of Figure 28 in its first position shown in Figure 30. Figure 31 A symbolically represents the mobile spreader of Figure 28 in its second position shown

figure 31.

  Figure 32 A symbolically represents the movable lifter of Figure 28 in its third position shown in Figure 32. Figure 33 A symbolically represents the lifter

  mobile of Figure 28 in its fourth position shown in Figure 33.

  Figure 34 A symbolically represents the movable lifter of Figure 28 in its fifth position shown in Figure 34.25 Figure 35 A symbolically represents the movable lifter of Figure 28 in its sixth position shown in Figure 35. Figure 36 A symbolically represents the movable lifter of Figure 28 in its seventh position shown

figure 36.

  Figures 37,38,39,40,41,42,43 schematically represent three circuit breakers equipped with the

  safety including a movable lifting beam according to the invention and locked together respectively in a first, a second, a third, a fourth, a fifth, a sixth, a seventh authorized interlocking combination.

  In FIG. 2, the circuit breaker 1, of the open circuit breaker type, has an engaged state in which it allows currents to flow from a line 4 and outgoing through a line 5 and a tripped state in which it does not allow 5 currents coming from line 4 towards line 5 The circuit breaker 1 is switched on or off by rotation of the lever 11. It is provided with a first finger 2 mounted for rotation on the axis 6 of the movable poles of the circuit breaker which is capable of move by rotation between a first position occupied when the circuit breaker is in the tripped state and a second position occupied when the circuit breaker is in the energized state It is also provided with a second finger 3 consisting of a roller 7 held by a stirrup 8 rotatably mounted15 on an axis 9 and capable of being moved between a first occupied position to allow the device to pass from the triggered state to the engaged state and a second occupied position to prohibit ire the device to go from the triggered state to the engaged state. 20 A box made up of a pair of cheeks 12 and a bottom 13 partially envelops the circuit breaker and carries fixing profiles 14 for fixing it with screws 15 on a support wall 16. An adapter block 10 forming part of the system

  safety is also mounted on a side of the circuit breaker 1 so as to cooperate mechanically with the fingers 2 and 3.

  In FIGS. 3 and 4, the adaptation block essentially consists of two mobile assemblies, one by

  relative to the other, one being fixed on the side of the circuit breaker 1, the other said of coupling cooperating mechanically with the fingers 2 and 3.

  The first assembly comprises a plate 101 fixed by a screw and a nut 107 on the side of the circuit breaker 1 La

  plate 101 has a wing l Ol A It also includes a plate 103 which extends parallel to the plate 101 and fixed integrally to the latter by a screw and a nut 108.

  Plate 103 has a first wing 103 A and a second

  wing 103 B The plate 103 is fixed by a screw and a nut 109 on the side of the circuit breaker 1.

  The second assembly comprises a plate 102 which extends parallel to the plate 103 and mounted to move in rotation thereon by means of a screw and a nut 106

  and washers 110,111,112, the screw playing the role of axis of rotation The plate 102 has a first wing 102 A, a second wing 102 B It also has a third curved wing 102 C having a curved end 102 D. The end 102 D is parallel to the plate 102.

  The finger 2 is provided with a stud 25 mechanically coupled with a ramp 102 E of the plate 102 The stud 25 is arranged so as to mechanically control the rotation of the plate 102 around the axis 106 when it mechanically cooperates with the ramp 102 E while moving

  between its first (shown in solid lines in Figure 3) and its second position (shown in broken lines in Figure 3).

  The wing 102 D is mechanically coupled with the roller 7 of the finger 3 The wing 102 D is arranged so as to mechanically control, by its rotation around the axis 106, the movement of the finger 3 between its first (represented in solid line in Figure 3) and its second position (shown in broken lines in Figure 3) As visible in Figure 3, the ramp 102 E is arranged on one side of the axis 106 and defines a first arm of the part 102 The wing 102 D is disposed on the other side of the axis 106 of the part 102 and defines a second arm of the part 102 If the first arm is moved by rotation of the part 102 around its axis 106 it as a result, the second arm is moved and vice versa. The part 102 therefore has a double effect. A return spring 104 is stretched between the wing l Ol A and the wing 102 and a return spring 105 is tensioned between the wing 103 B and the wing 102 B The return springs 104 and they act to force the plate 102 to occupy a first position Po, called the rest plate 102 shown in FIG. 3 in solid lines occupies this position Po.5 The wing 101 A is designed to receive at least one grip 113 for adjusting a cable 114 one end of which is fixed to the wing 102 A by a screw 115 The cable 114 is conducted in a cable sheath 116 from the adjustment socket 113 The wing 102 B is designed to receive a adjustment socket 10 117 a cable 118, one end of which is fixed to the wing 102 B by a screw 119 The cable 118 is routed in

  a cable sheath 120 from the adjustment tap 117. The adapter block 10 operates as follows.

  If the finger 2 is moved (by operating the handle of the circuit breaker 1 to switch it on) between its first position and its second position, the plate 102 (in its PO position) is rotated in a first direction of rotation around of its axis 106 by the lug 25 It then occupies a second position Pi The plate 102 in the position Pl is shown in broken lines in FIG. 3 Due to the displacement of the plate 102 from its position PO to its position Pi, the cable 114 is moved in the direction indicated by the arrow F 114 B and the cable 118 is moved in the direction indicated by the arrow F 118 B Furthermore, the wing 102 D is arranged in such a way that the finger 3 remains in its first position when moving the plate 102 between its position PO and its position Pl. The plate 102 now occupies its position P 0, the finger 2 its first position and the finger 3 its first position If the cable 114 is actuated in the direction indiq ued by the arrow F 114 A or if the cable 118 is actuated in the direction indicated by the arrow FÉlîA, the plate 102 is rotated in a second direction of rotation 35 around its axis 106 opposite the first direction of rotation to occupy a third position P 2 The plate 102 in position P 2 is shown in dashed lines in FIG. 3 The wing 102 D is arranged in such a way that the finger 3 moves between its first position and its second position during the movement of the plate 102 between its5 position PO and its position P 2 When the finger 3 occupies its second position, the circuit breaker 1 cannot be tripped Furthermore, the plate 102 is arranged in such a way that the finger 2 remains in its first position during displacement of the plate 102 between its position PO and 10 its position P 2 This effect is obtained by an adapted conformation of the ramp 102 E of the plate 102 on which the stud 25 moves as visible on the figur e 3. as described above, the plate 102 of the adaptation block 10 therefore has a double effect. The switching on of the circuit breaker 1 causes it to rotate in the first direction of rotation. Its rotation in the second direction of rotation prevents the engagement of the circuit breaker 1. FIG. 5 schematically represents an adaptation block 10 in which the plate 102 occupies position P 0, finger 2 its first position and finger 3 its first position This adaptation block 10 in its position PO is shown symbolically in FIG. 5 A by a block bearing the reference P 0. FIG. 6 schematically represents an adaptation block 10 in which the plate 102 occupies position Pl, finger 2 its second position and finger 3 its first position Ce adaptation block 10 in its position Pl is symbolically represented in FIG. 6 B by a block Pl bearing the reference Pl. 30 FIG. 7 schematically represents an adaptation block 10 in which the plate 102 occupies the po sition

  P 2, finger 2 its first position and finger 3 its second position This adapter block io in its position P 2 is symbolically represented in FIG. 7 A by a block P 235 bearing the reference P 2.

  Figures 8,9,10 schematically represent two circuit breakers D 1, D 2 locked together and each equipped with an adapter block 10 In this mode of use of the security system, a single cable 150 is necessary to lock between them the circuit breakers D 1, D 2 respectively in a first, a second and a third authorized interlocking combination The cable 150 is drawn between the wing 102 B of the adapter block 10 of the circuit breaker Dl and the wing 102 A of the adapter block 10 of circuit breaker D 2 so that the adapter blocks 10 of the two circuit breakers Dl and D 2 are both in the PO position as shown in Figure 8 Figure 8 shows a first interlocking combination authorized. If the circuit breaker Dl is switched on, its adaptation block 10 passes to its position Pl while the adaptation block 10 of the circuit breaker D 2 passes to its position P 2 (FIG. 9) and consequently prohibits the switching on of the circuit breaker D 2 FIG. 9 represents a second authorized interlocking combination To return to the first authorized interlocking combination, it is necessary to trip the circuit breaker Dl so that the two adapter blocks 10 return to their position PO by the effect return springs Now, if the circuit breaker D 2 is on, its adapter block 10 goes into its position PF while the adapter block 10 of the circuit breaker Dl goes into its position P 2 (Figure 10) and therefore prohibited circuit breaker Dl is engaged Figure 10 shows a third authorized interlocking combination Pour30 return to the first authorized interlocking combination, it is necessary to trip the disjo nctor D 2 so that the two adaptation blocks 10 return to their position PO by the effect of the return springs. This configuration of the safety device according to the invention therefore makes it possible to lock two circuit breakers between them, only one being activated, the other being unable to be activated. Figures 11 to 15 schematically represent three circuit breakers D 1, D 2, D 3 locked together and each equipped with an adapter block 10 In this mode of use of the security system, two cables 150,151 are required to lock between them the circuit breakers D 1, D 2, D 3 respectively in a first, a second, a third, a fourth and a fifth combination of authorized interlocking The cable 150 is drawn between the wing 102 B of the adaptation block 10 of the circuit breaker Di and the wing 102 A of the adapter block 10 of the circuit breaker D 2 so that the adapter blocks 10 of the two circuit breakers Di and D 2 are both in the position Po15 as shown in Figure 11 Par elsewhere the cable 151 is drawn between the wing 102 A of the adaptation block 10 of the

  circuit breaker D 2 and the wing 102 A of the adaptation block 10 of the circuit breaker D 3 so that the block 10 is also in its position Po as visible in FIG. 11 FIG. 20 11 represents a first combination of authorized interlocking.

  If the circuit breaker Dl is switched on, its adaptation block 10 passes into its position P1 while the adaptation blocks 10 of the circuit breakers D 2 and D 3 pass into their position P 2 (FIG. 12) and consequently prohibit the switching on of circuit breakers D 2 and D 3 FIG. 12 represents a second authorized interlocking combination To return to the first authorized interlocking combination, it is necessary to trip the circuit breaker Di so that the three adaptation blocks

  return to their position Po by the effect of the return springs.

  Now, if the circuit breaker D 2 is switched on, its adaptation block 10 passes into its position Pl while the adaptation block 10 of the circuit breaker Dl passes into its position P 2 and consequently prohibits the switching on of the circuit breaker Dl The block of adaptation 10 of circuit breaker D 3 remains in its position PO Figure 13 represents a third authorized interlocking combination To return to the first authorized interlocking combination, 5 it is necessary to trip circuit breaker D 2 so that the three adapter blocks 10 return to their position PO by the effect of the return springs. Now, if the circuit breaker D 3 is engaged, its adaptation block 10 passes into its position Pl, the adaptation block 10 of the circuit breaker D 2 passes into its position Pl (the finger 2 of the circuit breaker D 2 remains in its first position ) and the adaptation block 10 of the circuit breaker Dl goes into its position P 2 and consequently prohibits the switching on of the circuit breaker Dl FIG. 14 represents a fourth authorized interlocking combination To return to the first authorized interlocking combination, it it is necessary to trip the circuit breaker D 3 so that the three adapter blocks 10 return to their position PO by the effect of the return springs. 20 Now, if the circuit breakers D 2 and D 3 are engaged, their blocks of adaptation 10 pass into position Pl and the adaptation block 10 of the circuit breaker Dl passes into its position P 2 and consequently prohibits the engagement of the circuit breaker Dl FIG. 15 represents a fifth combination of authorized tripping To reach the first authorized tripping combination, it is necessary to trip the circuit breakers D 2 and D 3 so that the three adapter blocks 10 return to their position Po by the effect of the return springs. 30 This configuration of the security device according to the invention therefore makes it possible to lock three of them

  circuit breakers, the first being switched on and the other two cannot be switched on or one of the other two or the other two being switched on, the first cannot be switched on.

  The safety device according to the invention also comprises a fixed bar lifter 30 (fixed lifter) provided

  to interconnect between three adapter blocks 10 This fixed lifter 30 can be mounted on the side of a circuit breaker as visible in FIG. 16.

  In FIGS. 17 and 18, the fixed lifter 30 essentially consists of four assemblies movable with respect to each other, one being normally fixed to the side of the circuit breaker 1.10 The first assembly comprises a plate 301 fixed by screws and nuts (not shown) on the side of the circuit breaker 1 The plate 301 has a first wing 301 A, a second wing 301 B, a third wing 301 C The wing 301 A receives a plug 302 for adjusting a cable 303 The wing 301 B receives a socket 304 for adjusting a cable 305 The wing 301 C receives a socket 306 for adjusting a cable 307 The plate 301 has three slots respectively 308,309,310 extending parallel to each other It also has three recesses respectively

  311,312,313 of substantially rectangular shape extending parallel to one another.

  The second assembly comprises a plate 320 of substantially rectangular shape having a recess 321 substantially of the same dimension as the recess 311 and a wing 320 A A first retaining strip 322 and a second retaining strip 323 are fixed on either side of the plate 320 by a rivet 324 The retaining bar 323 is arranged on the rear side of the plate 301 in FIG. 17 The rivet 324 is arranged to slide in the light 308 A spiral spring 325 envelops the two bars 322 and 323 and works in compression in both the recess 311 and in the recess 321 so as to force the plate 320 to occupy a rest position in which the recesses 311 and 321 are superimposed. The plate 320 is capable of moving axially, from its rest position, along the lumen 308, in the direction indicated by the arrow F 320 A or in the direction indicated by the arrow F 320 B under the effect of a force of traction and return to its rest position when the traction force is released. 5 The third assembly is similar to the second assembly It comprises a plate 330 of substantially rectangular shape having a recess 331 substantially of the same size as the recess 313 and a wing 330 A A first holding bar 332 and a second holding bar 333 are fixed on either side of the plate 330 by a rivet 334 The retaining bar 333 is arranged on the rear side of the plate 301 in FIG. 17 The rivet 334 is arranged to slide in the light 310 A spiral spring 335 envelope the two bars 332 and 333 and works in compression both in the recess 313 and in the recess 331 so as to force the plate 330 to occupy a rest position in which the recesses 313 and 331 are superimposed The plate 330 is capable of moving axially, from its rest position, along the opening 310, in the direction indicated by the arrow F 330 A or in the direction indicated by the arrow e F 330 B under the effect of a tensile force and return to its rest position when the tensile force is released. The fourth set consists of a plate 340 in the shape of an inverted T, the branches 330 A and 330 B of the T cooperating with the base of the two plates 320 and 330 and extending perpendicular to the slots 308 and 310 the body of the T 340 C has a recess 341 substantially the same size as the recess 312 and a wing 340 D A first holding bar 342 and a second holding bar 343 are fixed on either side of the plate 340 by a rivet 344 The bar holding 343 is arranged on the rear side of the plate 301 in FIG. 17 The rivet 344 is arranged to slide in the slot 309 A spiral spring 345 envelops the two bars 342 and 343 and works in compression both in the recess 312 and in the recess 341 so as to force the plate 340 to occupy a rest position in which the recesses 312 and 341 are superimposed The plate 340 is capable of moving axially, from its position of rest, along the lumen 309, in the direction indicated by the arrow F 340 A or in the direction indicated by the arrow F 340 B under the effect of a traction force and return to its rest position when the tensile force is released Furthermore, the wing 301 C is pierced so as to allow the body of the 10 T of the plate 340 to pass when the latter moves in the direction indicated by the arrow F 340 B. One end of the cable 303 is fixed to the wing 320 A by a screw 350 so that actuation of the cable 303 in the direction indicated by the arrow F 320 A causes the displacement of the plate 320 in the same direction which then occupies a low position moving, the plate 320 drives the plate 340 in the same direction indicated by the arrow F 340 A which then occupies a low position As a result, the cable 307 is actuated in the direction indicated by the arrow F 340 A.

  The plate 330 remains in its rest position.

  Furthermore, one end of the cable 305 is fixed to the wing 330 A by a screw 351 so that actuation of the cable 305 in the direction indicated by the arrow F 330 A causes the displacement of the plate 330 in the same direction which occupies a low position When moving, the plate 330 drives the plate 340 in the same direction indicated by the arrow F 340 A which then occupies a low position As a result, the cable 307 is actuated in the direction indicated by the arrow F 340 A The plate 320 remains in its rest position. 30 Finally, one end of the cable 307 is fixed to the wing 340 D by a screw 352 so that the actuation of the cable 307 in the direction indicated by the arrow F 340 B causes the displacement of the plate 340 in the same direction which then occupies a high position By moving, the plate 34035 drives the plate 330 and the plate 320 in the same direction indicated by the arrows F 320 B and F 330 B which occupy then a high position He in As a result, the cables 303 and 305 are actuated in the direction indicated by the arrows F 320 B and F 330 B. FIG. 19 schematically represents a fixed lifting beam 30 in which the plates 320, 330 and 340 occupy a rest position This lifting beam 30 is shown symbolically in FIG. 19 A by a block bearing the reference EO. FIG. 20 schematically represents a fixed lifter 30 in which the plates 320, 330 and 340 occupy a high position. This lifter 30 is symbolically represented in FIG. 20 A by a block bearing the reference El. FIG. 21 schematically represents a fixed lifter 30 in which the plates 330 and 340 occupy a low position and the plate 320 occupies a rest position This lifter 30 is symbolically represented in FIG. 21 A by a block bearing the reference E 2. FIG. 22 schematically represents a fixed lifter 30 in which the plates 320 and 340 occupy a low position and plate 330 occupies a rest position This lifter 30 is symbolically represented in FIG. 22 A by a block bearing the reference E 3. FIGS. 23 to 26 diagrammatically represent three circuit breakers Dll, D 12 , D 13 locked together and each equipped with an adapter block 10 In addition, the circuit breaker D 12 is equipped with a fixed spreader 30 In this mode of use of the security system, four cables 160,161,162,163 are necessary to lock the circuit breakers Dll D 12, D 13 respectively in a first, a second, a third, and a fourth authorized interlocking combination The cable 160 is drawn between the wing 102 B of the adaptation block 10 of the circuit breaker Dli and the wing 340 D of the fixed spreader 30 so that the adaptation block 10 of the circuit breaker Dll occupies the position PO and the spreader fixed 30 occupies the EO position as shown in FIG. 23 The cable 161 is drawn between the wing 330 A of the fixed lifting beam 30 and the wing 102 A of the adaptation block 10 of the circuit breaker D 12 so that the block d adaptation 10 of circuit breaker D 12 occupies position 5 PO cable 162 is drawn between wing 320 A of the fixed spreader 30 and wing 102 A of adapter block 10 of circuit breaker D 13 in such a way that the block adaptation 10 of circuit breaker D 13 occupies the position PO Finally, the cable 163 is drawn between the wing 102 B of the adaptation block 10 of the circuit breaker D 12 and the wing 102 A of the adaptation block 10 of the circuit breaker D 13 FIG. 23 represents a first combination of authorized engagement. If the circuit-breaker Dli is switched on (FIG. 24), its adaptation block 10 passes into its position Pi It follows that the fixed lifting beam 30 passes into its position El and the adaptation blocks 10 respectively of the circuit-breakers D 12 and D 13 pass into their position P 2 and consequently prohibit the switching on of the circuit breakers D 12 and D 13 FIG. 24 represents a second authorized switching combination20 To return to the first authorized switching combination, it is necessary to trip

  the circuit breaker Dli so that the three adaptation blocks 10 return to their position PO and the fixed lifter 30 returns to its position EO.

  Now, if the circuit breaker D 12 is switched on (FIG. 25), its adaptation block 10 passes into its position Pl. It follows that the fixed lifter 30 passes into its position E 2 and the adaptation blocks 10 of the circuit breakers Dll respectively. and D 13 pass into their position P 2 and consequently prohibit the switching on of the circuit breakers Dll and D 13 FIG. 25 represents a third

  authorized interlocking combination To return to the first authorized interlocking combination, it is necessary to trip the circuit breaker D 12 so that the three adaptation blocks 10 return to their position PO and the fixed horn 30 returns to its position EO .

  Now, if the circuit breaker D 13 is switched on (FIG. 26), its adaptation block 10 passes into its position Pi. It follows that the adaptation block 10 of the circuit breaker D 12 passes into its position P 2, the fixed lifter 30 pass5 in its position E 3 and the adapter block 10 of the Dll circuit breaker passes in its position P 2 to consequently prohibit the switching on of the Dll and D circuit breakers 12 Figure 26 represents a fourth authorized switching combination To return to the first10 authorized interlocking combination, it is necessary to trip the circuit breaker D 13 so that the three adaptation blocks 10 return to their position PO and the fixed horn returns to its position EO. This configuration of the safety device according to the invention therefore makes it possible to lock three circuit breakers therebetween, only one being turned on and the other two being unable to be turned on. As a variant, the safety device according to the invention also comprises a lifting beam with movable bar 40 (movable lifting beam) intended to be interconnected between three adaptation blocks 10 this movable lifting beam 40 can be mounted on the side of a circuit breaker as visible in FIG. 27. In FIGS. 28 and 29, the movable lifting beam 40 consists essentially of five assemblies movable with respect to each other, one being normally fixed on the side of the circuit breaker 1. The first assembly comprises a plate 401 fixed by screws and nuts (not shown) on the side of the circuit breaker 1 The plate 401 has a first wing 401 A, a second wing 401 B, a third wing 401 C The wing 401 A receives a socket 402 for adjusting the 'a cable 403 The wing 401 B receives a socket 404 for adjusting a cable 405 The wing 401 C receives a socket 406 for adjusting a cable 407 The plate 401 has three lights respectively 408,409,410 extending parallel to the u relative to the other It also has three recesses respectively

  411,412,413 of substantially rectangular shape extending parallel to one another.

  The second assembly comprises a plate 420 of substantially rectangular shape having a recess 421 substantially of the same size as the recess 411 and a wing 420 A A first holding strip 422 and a second holding strip 423 are fixed on either side of the plate 420 by a rivet 424 The retaining bar 423 is arranged on the rear side of the plate 401 in FIG. 29 The rivet 424 is arranged to slide in the light 408 A spiral spring 425 envelops the two bars 422 and 423 and works in compression in both the recess 411 and in the recess 421 so as to force the plate 420 to occupy a rest position in which the recesses 411 and 421 are superimposed The plate 420 is capable of moving axially, from its rest position, along the lumen 408, t in the direction indicated by the arrow F 420 A or in the direction indicated by the arrow F 420 B under the effect of a force of traction and return to its rest position when the traction force is released. The third set is similar to the second set It comprises a plate 430 of substantially rectangular shape having a recess 431 substantially the same size as the recess 413 and a wing 430 A A first holding strip 432 and a second holding strip 433 are fixed on either side of the plate 430 by a rivet 434 The retaining bar 433 is arranged30 on the rear side of the plate 401 in FIG. 29 The rivet 434 is arranged to slide in the light 410 A spiral spring 435 envelops the two bars 432 and 433 and works in compression in both the recess 413 and in the recess 431 so as to force the plate 430 to occupy a rest position in which the recesses 413 and 431 are superimposed The plate 430 is susceptible to move axially, from its rest position, along

  light 410, in the direction indicated by arrow F 430 A or in the direction indicated by arrow F 430 B under the effect of a traction force and return to its rest position5 when the traction force is released .

  The fourth assembly comprises a plate 440 of substantially rectangular shape having a recess 441 substantially of the same dimension as the recess 412 and a wing 440 A A first holding bar 442 and a second holding bar 443 are fixed on either side of the plate 440 by a rivet 444 The retaining bar 443 is arranged on the rear side of the plate 401 in FIG. 29 The rivet 444 is arranged to slide in the light 409 A spiral spring 445 envelops the two bars 442 and 443 and works in compression in both the recess 412 and in the recess 441 so as to force the plate 440 to occupy a rest position in which the recesses 412 and 441 are superimposed The plate 440 is capable of moving axially, from 20 its rest position, along the lumen 409, in the direction indicated by the arrow F 440 A or in the direction indicated by the arrow F 440 B under the effect of a force of traction and return to its rest position when the traction force is released Wing 401 C is pierced so as to allow plate 440 to pass when it is moved in the direction indicated by arrow F 440 B. The fifth assembly consists of a plate 450 in the shape of an inverted T The branches 450 A and 450 B of the T extend perpendicular to the lights 308 and 310 and 30 have lights 451 A and 451 B respectively The body of the T 450 C has a light 451 C which extends perpendicular to the lights 451 A and 451 B and parallel to the light 409 This plate 450 is arranged at the rear of the plate 401 as shown in FIG. 29 It is held by the rivet 424 which is capable of slide in the light 451 A, by the rivet 444 which is capable of sliding in the light 451 C and by the rivet 434 which is capable of sliding in the light 451 B The plate 450 is capable of moving axially acer, from a rest position, along the lumen 409, in the direction indicated by the arrow F 440 A or in the direction indicated by the arrow F 440 B It is also

  capable of moving in rotation around the rivet 444 acting as an axis of rotation In the rest position of the plate 450, the recesses 421,431,441 being10 respectively superimposed on the recesses 411,413 and 412.

  One end of the cable 407 is fixed to the wing 440 A by a screw 462 so that the actuation of the cable 407 in the

  direction indicated by the arrow F 440 B causes the displacement of the plate 440 in the same direction which then occupies a high position.

  One end of the cable 403 is fixed to the wing 420 A by a screw 350 so that the actuation of the cable 403 in the

  direction indicated by the arrow F 420 A causes the displacement of the plate 420 in the same direction which then occupies a low position.

  One end of the cable 405 is fixed to the wing 430 A by a screw 461 so that the actuation of the cable 405 in the

  direction indicated by the arrow F 430 A causes the displacement of the plate 430 in the same direction which occupies a low position.

  If the cable 407 is actuated in the direction indicated by the arrow F 440 B, it drives the plate 440 which then occupies its high position In this position of the plate 440, the rivet 444 comes to bear against the high end of the light 451 C while the plate 450 is not moved As a result, the plates 420 and 430 remain in their rest position and the cables 403 and 405 are not actuated. Now, if the cable 405 is actuated in the direction indicated by the arrow F 430 A, the plate 430 moves from its rest position to a low position which causes the rotation of the plate 450 around the rivet 444 The rotation of the plate 450 causes the displacement of the plate 420 from its rest position to a high position and the actuation of the cable 403 in the direction indicated by the arrow F 420 B During the displacement of the plate 450, the rivets 434 and 424 move in lights 451 B and 451 A respectively. Similarly, if the cable 403 is actuated in the direction indicated by the arrow F 420 A, the plate 420 moves from its rest position to a low position ce10 which causes the rotation of the plate 450 around the rivet 444 The rotation of the plate 450 causes the plate 430 to move from its rest position to a high position and the cable 405 to be actuated in the direction indicated by the arrow F 430 B During the displacement t of plate 15 450, the rivets 434 and 424 move respectively in the slots 451 B and 451 A. Now the plates 420, 430 and 440 occupy their rest position If the cable 405 is actuated in the direction indicated by the arrow F 430 A , the plate 430 moves from its rest position to its low position By moving, the plate 430 causes the linear displacement and the rotation of the plate 450 by the effect of the sliding of the rivets 424,434 and 444 respectively in the slots 451 A , 451 B and 451 C It follows that the plate 420 remains in its rest position and the plate 440 remains in its rest position Likewise, If the cable 403 is actuated in the direction indicated by the arrow F 420 A, the plate 420 moves from its rest position to its low position By moving, plate 420 causes linear displacement30 and rotation of plate 450 by the effect of sliding rivets 424,434 and 444 respectively in the lumièr es 451 A, 451 B and 451 C As a result, the plate 430 remains in its rest position and the plate 440 remains in its rest position Finally, if the cables 403 and 405 are actuated simultaneously in the direction indicated by the arrows F 420 A and F 430 A, the plates 420 and 430 move from their rest position to their low position By moving, the plates 420 and 430 drive the plate 450 which moves linearly along the light 409 The displacement of the plate 450 causes the displacement of the plate 440 from its rest position towards a low position and the actuation of the cable 407 in the direction indicated by the arrow F 440 A. FIG. 30 schematically represents a movable lifting beam 40 in which the plates 420,430 and 440 occupy a rest position, this lifter 40 is symbolically represented in FIG. 30 A by a block bearing the reference NO. FIG. 31 schematically represents a movable lifting beam 40 in which the plate 440 occupies a high position and the plates 420, 430 occupy a rest position. This lifting beam 40 is symbolically represented in the figure

  31 A by a block bearing the reference Ni.

  FIG. 32 schematically represents a mobile lifting beam 40 in which the plates 420 and 440 occupy a high position and the plate 430 occupies low This lifting beam

  is symbolically represented in FIG. 32 A by a block bearing the reference N 2.

  FIG. 33 schematically represents a movable lifting beam 40 in which the plates 430 and 440 occupy a high position and the plate 420 occupies a low position. This lifting beam 40 is symbolically represented in the figure

  33 A by a block bearing the reference N 3.

  FIG. 34 schematically represents a movable lifting beam 40 in which the plates 420 and 440 occupy a rest position and the plate 430 occupies a low position This lifting beam 40 is symbolically represented in FIG. 34 A by a block bearing the reference N 4. The FIG. 35 schematically represents a movable lifter 40 in which the plates 420, 430 and 440 occupy a low position This lifter 40 is symbolically represented in FIG. 35 A by a block bearing the reference N 5. FIG. 36 schematically represents a movable lifter 40 in which the plates 430 and 440 occupy a rest position and the plate 420 occupies a low position This lifter 40 is symbolically represented in FIG. 36 A by a block bearing the reference N 6. FIGS. 37 to 43 schematically represent three circuit breakers D 11 O , D 120, D 130 locked together and each equipped with an adapter block 10 Furthermore, the D 120 circuit breaker is equipped with a mobile lifting beam 40 In this mode of use of the security system, three cables 170,171,172 are necessary to lock the circuit breakers D 1 01, D 120, D 130 respectively in a first, a second, a third, a fourth, fifth, sixth and seventh authorized interlocking combination Cable 170 is drawn between wing 102 B of adapter block 10 of circuit breaker D 110 and wing 440 A of the lifting beam 40 so that le20 adapter block 10 of circuit breaker D 110 occupies position PO and movable lifter 40 occupies position NO as shown in Figure 38 Cable 171 is drawn between wing 430 A of movable lifter 40 and wing 102 A of the adaptation block 10 of the circuit breaker D 120 so that the adaptation block 10 of the circuit breaker D 120 occupies the position PO the cable 172 is drawn between the wing 420 A of the lifting beam 30 and the wing 102 A of the D 130 circuit breaker adapter block d e such that the adapter block 10 of the circuit breaker D 130 occupies the position P O Figure 37

  represents an initial combination of authorized interlocking.

  If the circuit breaker D 110 is switched on (FIG. 38), its adaptation block 10 passes into its position Pl It follows that the movable lifting beam 40 passes into its position 35 Ni and the adaptation blocks 10 of the circuit breakers D 120 and D respectively 130 remain in their PO position Figure 38 shows a second interlocking combination

  authorized To return to the first authorized interlocking combination, it is necessary to trip the circuit breaker Dllo so that the adaptation block 10 of the circuit breaker Dl O returns to its position Po and the lifting beam returns to its position NO.

  Now, if the circuit breakers D 11 O and D 120 are switched on (FIG. 39), their adaptation blocks 10 pass into their position Pl It follows that the movable lifting beam 10 40 passes into its position N 2 and the adaptation block 10 of circuit breaker D 130 goes to its position P 2 and is prohibited by

  Consequently, the circuit breaker D 130 is engaged. FIG. 39 shows a third authorized engagement combination. To return to the first engagement combination, it is necessary to trip the circuit breakers D 11 O and D 120.

  Now, if the circuit breakers D 11 O and D 130 are on (FIG. 40), their adaptation blocks 10 pass into their position Pi. This results in the movable lifting beam 4020 passing in its position N 3 and the adaptation block 10 of the D 120 circuit breaker goes to its P 2 position to prevent

  consequently the circuit breaker D 120 is engaged. FIG. 40 represents a fourth authorized interlocking combination. To return to the first authorized interlocking combination, it is necessary to trip the circuit breakers D 11 O and D 130.

  Now, if the circuit breaker D 120 is switched on (FIG. 41), its adaptation block 10 passes into its position Pi. It follows that the movable lifting beam 40 passes into its position N 4 and the adaptation blocks 10 of the circuit breakers D 11 O and D 130 remain in their position PO FIG. 41 represents a fifth combination of authorized interlocking. Now, if the circuit breakers D 120 and D 130 are switched on (FIG. 42), their adaptation blocks 10 pass into their position Pl It follows that the movable lifting beam passes into its position N 5 and the adaptation block 10 of the circuit breaker D 110 goes into position P 2 to prohibit

  consequently the engagement of the circuit breaker D 110 FIG. 42 represents a sixth combination of engagement 5 authorized.

  Now, if the circuit breaker D 130 is switched on (FIG. 43), its adaptation block 10 passes into its position Pl. This results in the movable lifting beam 40 passes in its position N 6 and the adaptation block 10 of the circuit breakers 10 D 110 and D 120 remain in their PO position. Figure 43 represents a seventh authorized interlocking combination. this configuration of the security device according to the invention therefore makes it possible to lock three of them

  circuit breakers, two being on at the same time.

  It is understood that the cables of the safety device according to the invention can be replaced by rods.

Claims (6)

  1) A safety device intended to mechanically lock at least two devices between them (Dl, D 2, D 3, Dl O, D 12, D 13, D 11 O, D 120, D 130) each having an engaged state and a triggered state and each provided, on the one hand, with a first member (2) capable of moving between a first occupied position when the device is in the triggered state and a second occupied position when the device 10 is in the engaged state, and on the other hand, a second member (3) capable of being moved between a first occupied position to allow the apparatus to pass from the triggered state to the engaged state and a second position occupied to prevent the device from going from the triggered state to the engaged state, the device comprising at least one adapter block (10) associated with a device and designed to be installed on each device, the adapter block associated with a device comprising a first mechanical coupling means ( 102 E) intended to be mechanically controlled by the first member of this apparatus when the latter moves between its first and its second position and a second mechanical coupling means (102 D) intended to mechanically control the movement of the second member of this apparatus between its first and its second position, characterized in that said first and second mechanical coupling means of an adapter block are arranged to react one on the other in such a way that the first mechanical coupling means mechanically controls the second mechanical coupling means and vice versa. 30 2) The device according to claim 1, wherein said first and second coupling means of an adapter block consist of a single piece (102) rotatably mounted on an axis (106) and having a first35 (102 E) and a second (102 D) operating arm defined on either side of the axis, the first arm (102 E) being provided to cooperate r mechanically with the first member (2) of   the device, the second arm (102 D) being provided to cooperate mechanically with the second member (3) of the device.   3) The device according to claim 2, in which the first arm and the second arm of the part are arranged in such a way that: a) if the first member (2) of the device moves between its first position and its second position, the part (102) is rotated in a first direction of rotation around its axis (106) while the second member (3) of the device occupies its first position, b) if the part (102) is driven in rotation according to a second direction of rotation about its axis (106) opposite to the first direction of rotation, the second member (3) of the apparatus moves between its first position and its second position   while the first member (2) occupies its first position.   4) The device according to one of claims 1 to   3, comprising mechanical interconnection means   (114,118,150,151,30,40,303,305,307,160,161,162,163,403,405,4   07,170,171,172) provided for transmitting displacement commands between said means for coupling a block   of adaptation associated with an apparatus and those of another adaptation block 25 associated with another apparatus so as to coordinate the movements of the organs of the apparatuses.   ) The device according to claim 4, in which the mechanical interconnection means comprise a mechanical connection (150) between the first arm of a part of an adaptation block associated with the first device and the   second arm of a part of an adaptation block associated with the second device.   6) The device according to claim 5, wherein the mechanical interconnection means further comprises a mechanical connection (151) between the first arm of the part of the adapter block associated with the second device and the first arm of a part 7) The device according to claim 4, in which the mechanical interconnection means comprise a fixed lifter (30) having three transmission members (320,330,340), a mechanical connection. (161) between the first arm of the part of the adaptation block associated with the second device (D 12) and a first transmission member (330) of the fixed lifter, a mechanical connection (160) between the second arm of the part of the adapter block associated with the first device (D 10) and a second transmission member (340) of the fixed horn, a mechanical connection (162) between a third transmission member (320) of the fixed horn and the first arm of the part of an adapter block associated with a third device (D 13), and a mechanical connection (163) between the second arm of the part of the adapter block 20 associated with the second device (D 12) and the first arm of the part of an adapter block associated with a third device (D 13).   8) The device according to claim 4, in which the mechanical interconnection means comprise a movable lifting beam (40) having three transmission members (420,430,440), a mechanical connection (170) between the second arm of a piece of an adaptation block associated with a first device (D 1 l O) and a first transmission member (440) 30 of the mobile lifter, a mechanical connection (171) between a second transmission member (430) of the mobile lifter and   the first arm of a part of an adaptation block associated with a second device (D 120), a mechanical connection (172) between a third transmission member (420) of the mobile lifter 35 and the first arm of a part an adaptation block associated with a third device (D 130).   9) The device according to any one of   claims 4 to 8, wherein the mechanical connections   are made up of cables or rods.